Vain-glorious men are the scorn of the wise, the admiration of fools, the idols of paradise, and the slaves of their own vaunts.

Nothing is to be feared but fear.

...to invent is to discover that we know not, and not to recover or resummon that which we already know

...neither is it possible to discover the more remote and deeper parts of any science, if you stand but upon the level of the same science, and ascend not to a higher science.

Ill Fortune never crushed that man whom good fortune deceived not.

It is a sad fate for a man to die too well known to everybody else, and still unknown to himself.

The desire of power in excess caused the angels to fall; the desire of knowledge in excess caused man to fall: but in charity there is no excess; neither can angel nor man come in danger by it.